Plastics Mold Engineering Handbook
Plastics Mold Engineering Handbook
J. Harry Duboi, Waynel I. Pribble
Contents
Preface to Fourth Edition Vii
Preface to Third Edition Ix
1. Introduction to Plastics Processing,
Wayne /. Pribble
Molding Methods
Systems of Molding
For Plastics
2. Basic Mold Types and Features, Wayne /. Pribble
Injection Molding Machines
Compression and Transfer Presses
Continuous Extrusion Machines
Blow Molding Machines
Vacuum Forming Machines
Rotational Molding Machines
General Mold Types
, Elastics
Types of Molds
Mold Construction Nomenclature
Special Mold Classifications
3 Tool-making Processes, Equipment and
Methods, Paul E. Ferland
Cut-off Equipment
Metal Cutting Processes (Machining)
Metal Displacement Processes
Metal Erosion Processes
Casting Processes
Xii Contents
Shrink Fit Allowances
Mold Pins
Other Mold Parts
Temperature Control Media and Methods
Hobbftd Cavities and Plungers
L Opposed Cavities and Balanced Molds
F -surface Finishes and Textured Molds
T References
Metal-deposition Process 91 1 183
Miscellaneous Processes
Steps in Mold Finishing
Measurement of Surface Finish, Molds and Parts
References
4. Materials for Mold Making, Charles C. Davis, Jr. 114 205
Steel
Steel Forgings
Machinability
Heat Treatment
Tempering
Annealing
Stress Relieving
Hardness Penetration
Mold Steel Requirements
Selecting the Steel
Standard Mold Components
Alloy Steels
Stainless Steel
Maraging Steels
Steel for Machined Molds
Hobs and Hobbing
Hob Design
Hobbing Steels
Nonferrous Materials for Molds
Electroformed Cavities
Tool Steel Castings
Powdered Metal Components
Plastic Mold Cavities
Surface Treatment
Thermal Barriers for Molds
Pointers
References
6. Compression Molds, Wayne I. Pribble
Compression Molding
Design of Hand Mold
Design of 12-cavity Semiautomatic Mold
Spring-box Molds
Loading Shoe and Stripper Plate Molds
Positive Molds
Semipositive Molds
Subcavity Gang Molds
Bracket Mold
Mold Assembly
Automatic Compression Molds
Special Design Features
Large Molds
Side-ram Molds
Laminated Mold Construction
Other Compression Mold Considerations
References
7. Transfer and Injection Molds for
Thermosets, S. E. Tinkham and Wayne I. Pribble
Transfer Molding
Materials for Transfer Molding
Plunger Transfer Molds
Product Design Considerations
Plunger Transfer Mold Design
Transfer Tube (Loading Space Required)
Transfer Pressure
Runner Systems
Gating Transfer Molds
Plunger Transfer Mold (Example) of Base and Cover
Standard Mold Frames for Transfer Molds
Injection Molding of Thermosetting Materials
5. Design, Drafting and Engineering Practice,
Wayne /. Pribble
Principles and Rules of Design
Engineering and Design Procedures
Dimensioning Mold Drawings
Mold Stamping
Tool Strength
Runnerless Injection-compression Molds 513
Encapsulation
References
Coextrusion
Die Construction
Profile Extrusion Dies
Materials Used in Profile Dies
References
8. Injection Molds for Thermoplastics, 534
S. E. Tinkham and Wayne /. Fribble
Injection Equipment
Projected Area Press Capacity
Design Considerations
Types of Molds
Flow Resistance in the Heater Systems
Hot Manifold Systems for Thermoplastics
Types of Operation
Ejection or Knockout Systems
Runner Systems
Gating Systems
Hot Edge Gating
Valve Gating
Double Shot Molding
Venting
Cooling
Sprue Bushings
Sprue Pullers
Cavities
Designing Injection Molds
Standard Mold Bases
Standard Mold Bases and Components
Very Large Injection Molds
References
11 Blow Mold Construction and Design,
Robert S. Musel , Brooks B. Heise and Robert D. Delong
Plastic Blow Molding Processes
Extrusion Blow Mold Materials Design and Construction
Methods
Extrusion Blow Mold Fabrication
Design of Extrusion Blow Molds
Injection Blow Molding Design and Construction
Bottle Finish
Container Terminology
References
12. Molds for Reaction Injection, Structural
Foam and Expandable Styrene Molding,
Wayne I. Pribble
— Structural Foam Products
Molds for Expandable Styrene
Steam Chests
Mold Construction
References
13. Care, Maintenance and Repair of Plastics
Molds, Charles C. Davis , Jr.
Causes of Wear and Damage
Preventive Maintenance
Repair
Mold Mold Design, Leon R. Egg 679
References 486 683
14. Thermodynamic Analysis of Molds,
Wayne /. Pribble
Introduction
Moldcool System
Conclusion
Reference
Appendix
Index
10. Extrusion Dies and Tools for
Thermoplastics, Sidney Levy
General Concepts of Die Design
Analytical Relationships: Flow Rates Versus Pressure
Sheet Die Design
Blown Film Dies and Tooling
Selection and Design Criteria
Pipe and Tubing Dies
Crosshead Covering Dies
Rod and Monofilament Dies
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